University of Regina



Discrete Math Research Group

Publications Past Members Current Members About Us

About us

We are the discrete math research group in the Department of Mathematics and Statistics at the University of Regina. Our group meets weekly throughout the year to work on open problems in discrete mathematics. This is not a seminar series but rather a working group. We are always looking for new and interesting problems. Post-doctoral fellows and graduate students are welcomed and encouraged to participate. Please contact one of Shaun Fallat, Allen Herman, or Karen Meagher if you are interested in joinning our group.

Current Members

Faculty


Shaun Fallat
Professor


Allen Herman
Professor


Karen Meagher
Professor

Post-doctoral Fellows


Himanshu Gupta
PIMS Post-doctoral Fellow


Alice Lacaze-Masmonteil
PIMS CNRS Post-doctoral Fellow


Roghayeh (Mitra) Maleki
Post-doctoral Fellow


Samir Mondal
PIMS Post-doctoral Fellow


Sarobidy Razafimahatratra
FIELDS-Perimeter Post-doctoral Fellow


Sushil Singla
PIMS Post-doctoral Fellow


Alireza Talebpour
Ph.D Student

Past Members

Mohammad Adm, DADD Post-Doctoral Fellow
Seyed Ahmad Mojallal, PIMS Post-Doctoral Fellow
Bahman Ahmadi, PhD Student
Fatemeh Alinaghipour, PhD Student
Robert Bailey, PIMS Post-Doctoral Fellow
Andrea Burgess, Visiting Post-Doctoral Fellow
Ryan Bergen, Masters Student
Michael Cavers, PhD Student
Yi-Zheng Fan, Visiting Researcher
Chris Fisher, Professor
Adam Gorr, Masters Student
Ferdinand Ihringer, PIMS Post-Doctoral Fellow
Sam Jaques, Undergraduate Student
Neha Joshi, PhD Student
Shahla Nasserasr, Post-Doctoral Fellow
Mahsa Shirazi, PhD Student
Venkata Raghu Tej Pantangi, PIMS Post-Doctoral Fellow
Pavel Semukhin, Visiting Researcher
Ryan Tifenbach, PIMS Post-Doctoral Fellow
Boting Yang, Professor
Guanglong Yu, Visiting Researcher

Publications

Underlined authors are post-doctoral fellows or graduate students.

Published

  1. The q-analogue of zero forcing for certain families of graphs, S. Fallat; N. Joshi; R. Maleki; K. Meagher; A. S. Mojallal; S. S. Nasserasr, N. Mahsa ; A. S. Razafimahatratra; B. Stevens, Discrete Applied Mathematics, 348 (2024), 91-104.
  2. Weakly Hadamard diagonalizable graphs, M. Adm; S. Fallat; K. Meagher; S. Nasserasr; M. N. Shirazi; A. S.Razafimahatratra, Linear Algebra Applied, 610 (2021), 86-119.
  3. Achievable multiplicity partitions in the inverse eigenvalue problem of a graph, M. Adm; S. Fallat; K. Meagher; S. Nasserasr; S. Plosker; B. Yang, Special Matrices, 7 (2019), 276-290.
  4. Ovoids of generalized quadrangles of order (q,q2-q) and Delsarte cocliques in related strongly regular graphs, M. Adm; R. Bergen; F. Ihringer; S. Jaques; K. Meagher; A. Purdy; B. Yang, Journal of Combinatorial Designs, 26 (5) (2018), 249-263.
  5. Infection in hypergraphs, R. Bergen; S. Fallat; A. Gorr; F. Ihringer; K. Meagher; A. Purdy; B. Yang; G. Yu, Discrete Applied Mathematics, 237 (2018), 43-56.
  6. Minimum number of distinct eigenvalues of graphs, B. Ahmadi; F. Alinaghipour; M. Cavers; S. Fallat; K. Meagher; S. Nasserasr, Electronic Journal of Linear Algebra, 26 (2013), 673-691.
  7. The minimum rank of universal adjacency matrices, B. Ahmadi; F. Alinaghipour; S. Fallat; Y.-Z.Fan; K. Meagher; S. Nasserasr, Linear Algebra and its Applications, 437 (8) (2012), 2064-2076.
  8. Generalized covering designs and clique coverings, R. Bailey; A. Burgess; M. Cavers; K. Meagher, Journal of Combinatorial Designs, 19(5) (2011), 378-406.

Preprints

  1. On the Minimum number of distinct Eigenvalues of Distance Regular Graphs, S. Fallatl H. Gupta; A. Herman; J. Parenteau.